EP0237461B1 - Interrupteur de démarrage et d'inversion automatique d'un moteur - Google Patents

Interrupteur de démarrage et d'inversion automatique d'un moteur Download PDF

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Publication number
EP0237461B1
EP0237461B1 EP87630026A EP87630026A EP0237461B1 EP 0237461 B1 EP0237461 B1 EP 0237461B1 EP 87630026 A EP87630026 A EP 87630026A EP 87630026 A EP87630026 A EP 87630026A EP 0237461 B1 EP0237461 B1 EP 0237461B1
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EP
European Patent Office
Prior art keywords
blade
blades
pair
deflectable
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87630026A
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German (de)
English (en)
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EP0237461A2 (fr
EP0237461A3 (en
Inventor
John Meredith Hansen
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Emerson Electric Co
Original Assignee
Emerson Electric Co
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Filing date
Publication date
Application filed by Emerson Electric Co filed Critical Emerson Electric Co
Publication of EP0237461A2 publication Critical patent/EP0237461A2/fr
Publication of EP0237461A3 publication Critical patent/EP0237461A3/en
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Publication of EP0237461B1 publication Critical patent/EP0237461B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H01H1/28—Assembly of three or more contact-supporting spring blades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H01H21/60—Change-over switches with stable intermediate position

Definitions

  • This invention relates to a switch for controlling the starting and automatic reversing of single phase induction motors such as might be used, for example, and not limitation, to drive a garbage disposer unit.
  • Switches that start single phase induction motors and reverse the rotation of the motors if the rotor shaft drops below a predetermined speed due to an overload or comes to a stop are known in the prior art.
  • Automatically reversing motors are especially desirable to drive garbage disposers in which a jam-up can often be cleared by simply reversing the rotational direction of the motor.
  • Switches for starting and automatically reversing single phase induction motors are described for example in US-A-2 673 262, 2 683 844, 2 701 855, 2 850 592 and in 3 157 762 which discloses a switch according to the precharacterizing portion of independent claim 1.
  • Most currently available reversing switches are either electronic devices which are costly or some sort of friction activated devices which are known to be not as reliable as they ought to be.
  • the present invention features a switch that can start and automatically reverse an induction motor that has one start winding; that can be changed from a reversing switch to a starting switch by simply eliminating some parts; that has parts which are common for reducing the number of different parts; that has parts which are designed to permit overtravel to thereby eliminate the need for accurate control of tolerances of the assembled parts and that enhances reliability by employment of the simple mechanical motion of a reversely tiltable switch operating lever in combination with a centrifugally controlled rotating actuator.
  • a switch operable to start a single phase induction motor of the type having a rotor shaft, starting and running windings, and an actuator member rotatable with said shaft and movable to an active position in response to said motor rotating at below a predetermined speed or stopping and movable to an inactive position when said motor exceeds said predetermined speed
  • said switch comprising a base member of insulating material and having nominally top and bottom faces, generally flat switch blade means mounted to said base member, and comprising movable, resiliently deflectable blade means and relatively stationary blade means, said deflectable blade means and relatively stationary blade means being adapted to complete an electric circuit through said starting winding of said motor when in contact with one another, switch operator means of insulating material mounted on said base member and movable between a neutral position in which it is not in contact with said deflectable blade means and an active position in which it is in contact with said deflectable blade means and deflects the same, said switch operator means of insulating material mounted on said base member and movable between a
  • laterally spaced apart pairs of deflectable flat spring contact blades are mounted to the base member.
  • the blades in each pair are superimposed and mounted in cantilever fashion so that their free ends can be deflected.
  • Electrically connected stationary contact elements are supported from the base member in the line of movement of the deflectable spring blades.
  • the insulating operator shaft has diametrically opposite and spaced apart radially extending arms disposed between the pairs of springy, deflectable blades for operating the starting and reversing switch.
  • the radially extending arms on the operator shaft then rotate and push a blade from one pair into contact with its cooperating stationary contact and a blade from the other pair into contact with its cooperating stationary contact to provide current flow in one direction through the contacts and the starting winding so as to cause the rotor of the motor to turn in one direction.
  • the disc shifts again and wipes against the operator shaft lever to rock the shaft in the opposite direction.
  • the arms on the shaft then force the opposite blades in each pair of blades to contact their cooperating stationary contacts.
  • the starting and reversing switch is supplied from the power mains through a switch which, when closed, immediately connects the running winding of the motor across the power lines.
  • the new switch comprises a base member 10 composed of a rigid insulating plastic material.
  • the electrical conducting elements and support members arranged on the top surface of base member 10 are mirror images of those on the bottom surface. All of the elements shown in figures 1 and 6 are used when the switch is used for controlling the starting winding of the motor and for reversing the motor but one of the sets of elements on the top or the bottom of the base member can be removed if it is desired to simply use the switch for starting a single phase motor that is to run in the same direction each time it is energized.
  • Spade connector 11 has one of the power lines L1 connected to it. There is a manually operated single pole main switch24 in the power line. Spade connector 11 is part of a stiff flat metal conducting support plate 12. Spade connector 13 is also connected to the power line and is part of a stiff conducting support plate 14. As can be seen in figure 6, spade connectors 11 and 13 are at the top and bottom of base member 10 and are electrically connected by means of an eyelet 15 which is flared to staked at both ends. Rivets could be used in place of eyelets. Spade connector 17 is part of a support plate 18 which resides at the top of base member 10. As shown diagrammatically in figure 6, spade connector 17 connects to a conductor 19 leading to one end of the motor starting winding 20.
  • the second side of the power mains, L2 connects to either of spade connectors 25 on plate 26 or connector 27 on plate 28.
  • the motor running winding 21 is connected permanently between connector 14 which connects to line L1 and connector 26 which connects to line L2.
  • the eyelet 29 which mounts plates 26 and 28 to base 10 also connects plates 26 and 28 electrically.
  • Switch blades 36 and 37 fasten to the top and bottom, respectively, of base member 10 where they become conneced in common to single rigid support plates 12 and 14 by means of eyelet 15. Blades 36 and 37 in one pair are thus mounted in cantilever fashion and are superimposed but spaced apart from each other by at least the thickness of the base member in the region where they are fastened. Blades 36 and 37 are springy and deflectable and typically composed of beryllium copper. Near the free end of each of the blades 36 and 37, there is an electric contact element 38 and 39 which are desirably composed of silver cadmium oxide alloy. A corresponding pair of cantilever supported switch blades 40 and 41 are mounted to the top and bottom of base member 10 laterally spaced from and in parallel with blades 36 and 37.
  • Blades 40 and 41 are similarly spaced apart by at least the thickness of base member 10 where they are mounted. They are electrically interconnected with connector plates 26 and 28 by means of eyelet 29. These blades are provided with contact elements 43 and 44 at their free ends. They are composed of the same material and have the same properties as blades 36 and 37.
  • Double blade member 45 is a double bladed member made of the same material as blade 36, for instance.
  • Double blade member 45 has a flat central region 46 on which it is mounted and two unitary oppositely extending flexible blade members 47 and 48.
  • double blade member 45 is mounted to base member 10 on its upstanding bosses 49 and 50 by means of eyelets 51 and 52.
  • the remote ends of deflectable blades 47 and 48 of double blade member 45 are provided with contact elements 53 and 54.
  • contact 53 of double blade element 45 is arranged over contact 38 of single blade 36 and there is a space between single blade 36 and blade 47 so their contacts 38 and 53 are not normally in contact.
  • the other blade portion 48 of double blade member 45 is arranged over and in spaced relationship with single blade 40 so the contact element 54 on double blade element 48 and contact element 43 on the single blade 40 are aligned with each other and spaced apart.
  • single blade 36 can be pushed upwardly for its contact element 38 to make a resilient contact with contact element 53 on blade 47 on the double blade member 45.
  • blade 40 which is laterally spaced and oppositely directed from blade 36 can be deflected upwardly for its contact element 43 to make a resilient contact with contact element 54 on blade 48 of the double blade member 45.
  • base member 10 The arrangement of the parts at the bottom of base member 10 is similar to the arrangement on top which was just described.
  • another double blade member 60 having individual deflectable blades 61 and 62 on which there are contact elements 63 and 64.
  • single blade element 41 is superimposed over blade 61 on double blade member 60 and contact elements 44 and 63 are in alignment.
  • single blade element 37 is superimposed over blade 62 of the double blade member 60 and contact elements 39 and 64 are in alignment but spaced apart.
  • blade 37 can be deflected for its contact element 39 to make resilient contact with contact element 64 on blade 62 of double blade member 60.
  • single blade 41 can be deflected for its contact element 44 to make resilient contact with contact element 63 on blade 61 of double blade member 60.
  • Double blade member 60 is secured to bosses on the bottom of base member 10 under the compressive force of stiff member 30 which is held by two eyelets 65 and 66 to base member 10.
  • Most of the flexible blades and rigid supports, single blade 40 and stiff support 28 for example, have notches such as the one marked 69 for engaging with bosses such as the one marked 70 to keep the parts in alignment.
  • Switch operator 75 is composed of a rigid plastic insulating material and comprises a shaft 76, oppositely radially extending arms 77 and 78 and an operating lever 79.
  • Shaft 76 of the switch operator is set in recesses 80 and 81 in base member 10 for rotating through a limited angle.
  • radially extending arm 78 is disposed between the top single switch blade 36 and the bottom single switch blade 37 which is easier to see in figure 3.
  • Figure 5 shows how the other radially extending arm 77 of the switch operator is disposed between top single blade 40 and bottom single blade 41.
  • radially extending arm 77 in Figure 5 will deflect blade 41 and put the contact element 44 on single blade 41 into contact with contact element 63 on one blade 61 of double blade member 60.
  • switch operator 79 is swung clockwise, upper single blade 40 will be deflected such that its contact element 43 will come into contact with contact element 54 on double blade member 45.
  • the switch base member 10 is fastened by means of machine screws 81 to mounting posts 82 and 83 which, in this particular design, are formed integrally with the end cap 84 of an electric motor 85.
  • the motor shaft is marked 86 and is rotatable in a bushing 87.
  • a fragment of the rotor 88 and the stator 89 are depicted in Figure 7. Sections through one of the starting winding coils 20 and running winding coils 21 are shown.
  • the starting and reversing switch actuator shown in Figure 7 is a basically conventional centrifugal force operated type which is generally designated by the reference numeral 90. It comprises a sleeve 91 which has an integral flange or disc 92 extending radially from it. The bottom of the disc is smooth.
  • disc 92 is presently in its lowest obtainable position in which case it is holding switch operating lever 79 in a position that is angulated from vertical in a direction that depends on which direction the motor was turning when it last came to a stop.
  • Centrifugal actuator 90 includes a body 93 that is shaped somewhat like a truncated pyramid which has an integral sleeve 94 which fits tightly on motor shaft 86.
  • switch operating lever 79 will tilt clockwise as viewed from the right side in Figure 7. As will be elaborated later, every time the operating lever 79 is tilted from neutral unactuated position to one side of what is nominally vertical to the other side, the switch blades are repositioned so that the direction of current flow through the starting winding 20 of the motor will reverse and the motor rotation will reverse concurrently.
  • the starting and reversing switch blades will be set in such a position that the next time the motor is energized, it will rotate in a direction opposite from that which it rotated before it was deenergized.
  • Figure 4 is especially useful for illustrating how the centrifugally actuated disc 92 and switch operating lever 79 relate to each other. Assume that mains switch 24 has just been closed and the motor and actuator disc 92 start running in the direction of the arrow next to the disc. The motor now comes up to full speed. Disc 92 retracts upwardly. Operating lever 79 rocks to neutral or vertical position as in Figure 3 and contacts 38 and 53 separate and the starting winding deenergizes. Now assume the motor and disc 92 slow down to nearly or actually a stop due to load jamming of the motor or due to opening main line switch 24. Disc 92 then descends.
  • Figures 9-11 are diagrammatic representations of the switch assembly depicted in Figures 1-6.
  • the reference numerals used in these figures correspond with those used in the other figures to identify similar items.
  • the Figure 9 diagram depicts the position of the switch blades when the motor is up to speed as it is in Figure 8. At this time the main power switch 24 would be closed so as to supply power through line L1 to the switch. The switch operator arms are in neutral position. All contacts are open so the starting winding 20 is deenergized. Current flow is through overload protective device 105 to spade connector 13 which is connected to spade connector 11 by means of eyelet 15. Spade 11 connects run winding 21 of the motor between spade connectors 11 and 27.
  • Spade connector 11 connects to power line L1 and spade connector 27 connects to power line L2 through eyelet 29.
  • the running winding 21 is connected across the power lines but the starting winding 20 is deenergized as a result of all switch blades and contacts being in opened circuit condition.
  • Figure 12 shows how the switch is adapted for controlling a motor to run in a single direction.
  • the parts depicted in the Figure 12 embodiment are all present in the Figure 6 embodiment but parts needed in the latter are now eliminated from the single motor direction control switch.
  • the design makes it easy to changeover the switch assembly production line from single direction to reversing switches and vice versa. Parts inventory is minimized.
  • several components on the top and bottom faces of the switch base 10 are eliminated and no parts had to be substituted.
  • the running winding 31 of the motor is fixedly connected between the line switch L1 spade connector 14 and spade connector 25 which is always connected to spade connector 28 and power line L2.
  • the starting winding 20 circuit is interrupted under centrifugal force when the motor gets up to speed. This results, as in the reversing switch version, from the actuator disc 92 retracting from the operating lever 79 and the lever swinging to neutral position under the biasing force of the springy switch blades such as blades 36 and 47.
  • the starting winding circuit starts at line L1 and connector 14 and continues through eyelet 15 to connector 12, blade 35, blade 47, support plate 18 via eyelets 51 and 52 and then to the starting winding 20 from spade connector 17 on support plate 18.

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  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)
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Claims (8)

  1. Commutateur actionnable pour faire démarrer un moteur à induction monophasé (85) du type comportant un arbre de rotor (86), des enroulements de démarrage et de marche (21) et un organe de commande (92) pouvant tourner avec l'arbre (86) et pouvant être déplacé vers une position active par suite de la rotation du moteur (85) à une vitesse inférieure à une vitesse prédéterminée ou de l'arrêt de ce moteur, et pouvant être déplacé vers une position inactive lorsque le moteur (85) tourne à une vitesse dépassant cette vitesse prédéterminée, ce commutateur comprenant un élément de base (10) en matériau isolant, ayant des surfaces supérieure et inférieure, des moyens à lames de commutateur généralement planes, montés sur l'élément de base (10) et comprenant des moyens à lames mobiles, flexibles élastiquement, et des moyens à lames relativement fixes, ces moyens à lames flexibles et ces moyens à lames relativement fixes étant adaptés de manière à compléter un circuit électrique à travers l'enroulement de démarrage (20) du moteur (85) lorsqu'ils sont en contact les uns avec les autres, un moyen (75) d'actionnement du commutateur en matériau isolant, monté sur l'élément de base (10) et pouvant se déplacer entre une position neutre dans laquelle il n'est pas en contact avec les moyens à lames flexibles, et une position active dans laquelle il est en contact les moyens à lames flexibles et provoque la flexion de ceux-ci, les moyens à lames flexibles et les moyens à lames relativement fixes étant en contact les uns avec les autres dans l'une des positions neutre et active du moyen (75) d'actionnement du commutateur, une manette (79) sur le moyen (75) d'actionnement du commutateur, cette manette étant disposée de manière à être rencontrée par l'organe de commande rotatif (92) lorsque cet organe de commande (92) se trouve dans sa position active et que le moteur (85) tourne à une vitesse inférieure à la vitesse prédéterminée ou est arrêté afin d'agir ainsi sur le moyen (75) d'actionnement du commutateur pour le faire passer dans sa position active et faire fléchir les moyens à lames flexibles, l'organe de commande rotatif (92) étant écarté de la manette (79) lorsque la vitesse du moteur (85) dépasse la vitesse prédéterminée, afin de permettre au moyen (75) d'actionnement du commutateur de retourner à sa position neutre, si bien que la force de réaction des moyens à lames fléchies amène ces moyens à lames fléchies à reprendre leur position non fléchie, caractérisé en ce que le moyen (75) d'actionnement du commutateur comporte un arbre (76) monté sur l'élément de base (10) de manière à tourner autour d'un axe et des bras (77,78) sur l'arbre (76), ces bras (77,78) s'étendant radialement à partir de l'axe et étant adjacent aux moyens à lames flexibles, d'un côté de ceux-ci qui est le plus éloigné des moyens à lames relativement fixes, de telle façon que la venue en contact de l'organe de commande rotatif (92) avec le moyen (75) d'actionnement du commutateur provoque un mouvement de ce moyen (75) d'actionnement du commutateur pour le faire passer dans sa position active, en faisant ainsi tourner l'arbre d'actionnement (76) et les bras (77,78), autour de l'axe précité, afin de fléchir les moyens à lames flexibles et les amener en contact avec les moyens à lames relativement fixes, l'écartement de l'organe de commande rotatif (92) à partir de la manette (79) permettant à la force de réaction des moyens à lames fléchies de rétablir l'arbre (76) et les bras (77,78) dans la position neutre, en permettant la séparation des moyens à lames fléchies à partir des moyens à lames relativement fixes.
  2. Commutateur suivant la revendication 1 caractérisé en ce que l'organe de commande rotatif (92) est un disque (92) coaxial avec l'arbre du rotor (86) et pouvant tourner avec celui-ci, la manette (79) sur l'arbre (76) d'actionnement du commutateur ayant un bout ou une extrémité libre qui reçoit une action de balayage ou de frottement de la part du disque (92) lorsque ce disque (92) tourne et qu'il est déplacé vers sa position active, de telle façon que la manette (79) bascule dans le sens de rotation du disque (92), lorsque le disque de commande (92) vient en contact avec l'extrémité de la manette.
  3. Commutateur suivant la revendication 1, pour assurer l'inversion automatique du moteur à induction monophasé (85), caractérisé en ce que les moyens à lames du commutateur comprennent deux paires de lames flexibles (36, 37; 40, 41), les deux lames flexibles dans chaque paire ayant un espace entre elles et pouvant fléchir alternativement dans des directions opposées, les moyens à lames relativement fixes comportent une pluralité de lames relativement fixes (47, 48; 61, 62) et chacune des lames flexibles (36, 37; 40, 41) a une lame relativement fixe (47,48;61,62) qui coopère avec elle, l'arbre (76) est disposé entre les deux lames flexibles de chaque paire et les bras comprennent un premier bras (77) de flexion des lames, s'étendant radialement dans une première direction et disposé entre les lames flexibles (40,41) d'une paire, ainsi qu'un second bras (78) de flexion des lames s'étendant radialement dans la direction opposée et disposé entre les lames flexibles (36,37) de l'autre paire, aucun des deux bras (77,78) de l'arbre (76) ne provoquant la flexion d'une lame lorsqu'ils se trouvent en position neutre, la manette (79) de l'arbre (76) d'actionnement du commutateur étant rencontrée par l'organe de commande (92) lorsque la vitesse de rotation de cet organe de commande (92) est tombée en dessous de la vitesse prédéterminée, afin de faire tourner l'arbre (76) de commande du commutateur dans un sens qui dépend du sens dans lequel l'organe de commande (92) était en train de tourner, si bien que le premier bras (77) tourne dans une direction afin de fléchir, dans une direction, une lame (41) de la paire de lame flexibles (40,41), pour l'amener en contact avec une lame relativement fixe associée (61), et que le second bras (78) tourne dans la direction opposée afin de provoquer la flexion d'une lame opposée (36) de l'autre paire de lames flexible (36,37), pour l'amener en contact avec une lame relativement fixe associée (47), afin de compléter un circuit à travers les lames fléchies et l'enroulement de démarrage (20), le commutateur comportant en outre des moyens à bornes électriques afin de connecter un côté de l'alimentation (L1), en commun, à une paire de lame flexible (40,41) et à une extrémité de l'enroulement de marche (21), et pour connecter l'autre côté de l'alimentation électrique (L2), en commun, à l'autre paire de lames flexibles (36,37) et à l'autre extrémité de l'enroulement de marche (21), et des moyens à bornes électriques afin de connecter, en commun, deux des lames relativement fixes (47,48) qui coopèrent avec une lame flexible correspondante (40) dans chaque paire de lames à une extrémité de l'enroulement de démarrage (20) et pour connecter, en commun, deux des lames relativement fixes (61,62) qui coopèrent avec l'autre lame flexible correspondante (37,41), dans chaque paire de lames, à l'autre extrémité de l'enroulement de démarrage (20).
  4. Commutateur suivant la revendication 3 caractérisé en ce que la première paire de lames flexibles (40,41) comprend une lame supérieure (40) montée sur l'élément de base (10), de manière à pouvoir être fléchie en s'éloignant de sa surface supérieure, et une autre lame inférieure (40,41) montée sur l'élément de base (10) de manière à pouvoir être fléchie en s'éloignant de sa surface inférieure, l'autre paire de lames flexibles (36,37) étant espacées latéralement de la première paire et comprenant une lame supérieure (36) qui est montée sur l'élément de base (10) de manière à pouvoir être fléchie en s'écartant de sa surface supérieure, et une autre lame inférieure (47) qui est montée sur l'élément de base (10) de manière à pouvoir être fléchie en s'écartant de sa surface inférieure, et en ce que la pluralité de lames relativement fixes (47,48;61,62) comprend une première paire de lames relativement fixes supérieures (47,48), montées sur l'élément de base (10), une première lame fixe (48) de cette première paire étant espacée de la lame supérieure (40) de la paire de lames flexibles (40,41) et alignée avec cette lame supérieure, tandis que l'autre lame fixe (47) de la première paire est espacée de la lame supérieure (36) de l'autre paire de lames (36,37) et alignée avec cette lame supérieure, et une seconde paire de lames fixes inférieures (61,62) montées sur l'élément de base (10), une lame fixe (61) de la seconde paire étant espacée de la lame inférieure (41) de la première paire de lames flexibles (40,41) et alignée avec cette lame inférieure, tandis que l'autre lame flexible (62) est espacée de la lame inférieure (37) de l'autre paire de lames flexibles (36,37) et alignée avec cette lame inférieure.
  5. Commutateur suivant la revendication 4 caractérisé en ce que les lames de chaque paire de lames flexibles (36,37;40,41) sont supportées en porte-à-faux à partir de l'élément de base (10).
  6. Commutateur suivant la revendication 4 caractérisé en ce que les paires, espacées latéralement l'une de l'autre, de lames flexibles (36,37;40,41) sont parallèles l'une à l'autre, une lame d'une paire est superposée à l'autre lame de la même paire, et ces lames sont montées en porte-à-faux sur l'élément de base (10), les lames d'une paire s'étendant dans une direction opposée par rapport aux lames de l'autre paire.
  7. Commutateur suivant la revendication 4 caractérisé en ce que les moyens à lames relativement fixes comprennent une paire d'éléments (45,60) à lame double, chacun de ces éléments comportant une partie centrale plane (46) avec deux des lames fixes (47,48;61,62) formant une seule pièce avec cette partie centrale plane (46), s'étendant dans des directions opposées à partir de cette partie centrale, en étant parallèles l'une à l'autre et sensiblement coplanaires l'une avec l'autre.
  8. Commutateur suivant la revendication 7 caractérisé en ce qu'il comporte une paire de plaques supports rigides (18,30) fixées à l'élément de base (10) et portant sur la partie centrale plane (46) des éléments (45,60) à lame double, chacune des plaques supports (18,30) étant conformée de telle façon que les lames (47,48;61,62) sur l'élément (45,60) à lame double correspondant soient séparées de la plaque support (18,30) de telle façon qu'elles puissent fléchir lorsque les lames flexibles (36,37;41,40) sont fléchies pour venir en contact avec les lames (45,48;61,62) des éléments (45,60) à lame double.
EP87630026A 1986-03-03 1987-02-26 Interrupteur de démarrage et d'inversion automatique d'un moteur Expired - Lifetime EP0237461B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US835627 1986-03-03
US06/835,627 US4665286A (en) 1986-03-03 1986-03-03 Motor starting and automatic reversing switch

Publications (3)

Publication Number Publication Date
EP0237461A2 EP0237461A2 (fr) 1987-09-16
EP0237461A3 EP0237461A3 (en) 1989-06-14
EP0237461B1 true EP0237461B1 (fr) 1993-04-14

Family

ID=25270013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87630026A Expired - Lifetime EP0237461B1 (fr) 1986-03-03 1987-02-26 Interrupteur de démarrage et d'inversion automatique d'un moteur

Country Status (5)

Country Link
US (1) US4665286A (fr)
EP (1) EP0237461B1 (fr)
CA (1) CA1287859C (fr)
DE (1) DE3785377T2 (fr)
ES (1) ES2040272T3 (fr)

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US4922062A (en) * 1983-05-20 1990-05-01 General Electric Company Switch and terminal assembly
US5059841A (en) * 1983-05-20 1991-10-22 General Electric Company Dynamoelectric machine
US5093592A (en) * 1987-04-03 1992-03-03 General Electric Company Dynamoelectric machine with a terminal board mounted thereto
US5266761A (en) * 1987-04-03 1993-11-30 General Electric Company Dynamoelectric machine, methods of assembling such, terminal board assembly, and method of assembling a switch device with a supporting means therefor
US4958051A (en) * 1987-04-03 1990-09-18 General Electric Company Terminal board assembly
US5245237A (en) * 1992-03-19 1993-09-14 General Electric Company Two compartment motor
JPH0674116B2 (ja) * 1992-06-15 1994-09-21 象印チエンブロック株式会社 巻上機
US6648252B2 (en) 2000-10-04 2003-11-18 Emerson Electric Co. Switched reluctance machine and food waste disposer employing switched reluctance machine
US6481652B2 (en) 2000-11-28 2002-11-19 Emerson Electric Co. Food waste disposer having variable speed motor and methods of operating same
US6854673B2 (en) * 2000-11-28 2005-02-15 Emerson Electric Co. Food waste disposer having a variable speed motor
US6610942B1 (en) * 2002-07-16 2003-08-26 Emerson Electric Co. Switch assembly for food waste disposer
KR100480119B1 (ko) * 2002-10-15 2005-04-07 엘지전자 주식회사 원심스위치
KR100480120B1 (ko) * 2002-10-16 2005-04-06 엘지전자 주식회사 단상유도전동기용 원심스위치
ES2474196T3 (es) * 2004-04-27 2014-07-08 Emerson Electric Co. Dispositivo desatascador de aparato de tratamiento y evacuación de desperdicios de alimentos y método
US8305028B2 (en) * 2010-03-09 2012-11-06 Nidec Motor Corporation Electric motor and switch for electric motor having arc barrier
CN102280274B (zh) * 2011-06-12 2013-09-11 钟婕 一种滑杆式行程转换开关

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US2673272A (en) * 1951-05-15 1954-03-23 Westinghouse Electric Corp Circuit interrupter
US2683844A (en) * 1951-08-24 1954-07-13 Edward J Schaefer Reversing switch for electric motors
US2673262A (en) * 1952-10-30 1954-03-23 Gen Motors Corp Motor reversing mechanism
US2701855A (en) * 1953-01-30 1955-02-08 Freda Hammes Reversible motor and switch for garbage disposal units
US2850592A (en) * 1955-08-10 1958-09-02 In Sink Erator Mfg Company Reversible motor and switch for garbage disposal units
US3157762A (en) * 1961-08-30 1964-11-17 Gen Electric Speed responsive switch arrangement for use in controlling winding circuits of single phase reversible electric motors

Also Published As

Publication number Publication date
DE3785377T2 (de) 1993-07-29
CA1287859C (fr) 1991-08-20
DE3785377D1 (de) 1993-05-19
ES2040272T3 (es) 1993-10-16
EP0237461A2 (fr) 1987-09-16
US4665286A (en) 1987-05-12
EP0237461A3 (en) 1989-06-14

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